add thd local variables "column pruning" and "expression".

mroonga · Aug 19, 2009 · 89b16cd · 89b16cd
1 parent f525965
commit 89b16cd
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Showing 2 changed files with 27 additions and 1 deletion.
diff --git a/ha_groonga.cc b/ha_groonga.cc
@@ -17,6 +17,24 @@ extern "C" {
 
 #include "ha_groonga.h"
 
+static MYSQL_THDVAR_BOOL(
+                         column_pruning,
+                         PLUGIN_VAR_OPCMDARG | PLUGIN_VAR_THDLOCAL,
+                         "enable column pruning.",
+                         NULL,
+                         NULL,
+                         TRUE
+                         );
+
+static MYSQL_THDVAR_BOOL(
+                         expression,
+                         PLUGIN_VAR_OPCMDARG | PLUGIN_VAR_THDLOCAL,
+                         "enable expression.",
+                         NULL,
+                         NULL,
+                         TRUE
+                         );
+
 MRN_CHARSET_MAP mrn_charset_map[] = {
   {"utf8", GRN_ENC_UTF8},
   {"cp932", GRN_ENC_SJIS},
@@ -134,6 +152,13 @@ int mrn_plugin_deinit(void *p)
 struct st_mysql_storage_engine storage_engine_structure =
 { MYSQL_HANDLERTON_INTERFACE_VERSION };
 
+struct st_mysql_sys_var  *mrn_system_variables[] =
+{
+  MYSQL_SYSVAR(column_pruning),
+  MYSQL_SYSVAR(expression),
+  NULL
+};
+
 mysql_declare_plugin(mroonga)
 {
   MYSQL_STORAGE_ENGINE_PLUGIN,
@@ -146,7 +171,7 @@ mysql_declare_plugin(mroonga)
   mrn_plugin_deinit,
   0x0001,
   NULL,
-  NULL,
+  mrn_system_variables,
   NULL
 }
 mysql_declare_plugin_end;

diff --git a/ha_groonga.h b/ha_groonga.h
@@ -29,6 +29,7 @@ typedef struct _mrn_cond
   int order_list_size;
 } mrn_cond;
 
+
 /* handler class */
 class ha_groonga: public handler
 {